ASoC: intel: Fix snd_pcm_format_t handling

As sparse warns, the PCM format type can't be dealt as integer as
found in Intel SST driver codes.

Fix them in the following two ways:

- The open code with snd_mask_set() and params->masks reference is
  replaced with params_set_format()

- The rest codes with snd_mask_set(fmt, SNDRV_PCM_FORMAT_XXX) are
  replaced with the new helper, snd_mask_set_format().

Reported-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/skl_rt286.c

@@ -229,7 +229,7 @@ static int skylake_ssp0_fixup(struct snd_soc_pcm_runtime *rtd,
 
 	/* set SSP0 to 24 bit */
 	snd_mask_none(fmt);
-	snd_mask_set(fmt, SNDRV_PCM_FORMAT_S24_LE);
+	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
 	return 0;
 }